Certified Gluten Free by the UK Coeliac SocietyMeets the FDA standard for gluten free food of less than 20 parts per million of glutenWheat flour is replaced by a blend of rice flour, maize flour and potato starchOur promise is "all the pure-butter taste, aroma and texture you love, but without the gluten"Classic pure butter gluten free shortbread offers a crumbly "melt-in-your-mouth" texture and all butter taste